Comparing two RNS-510 versions

[wilko]

Hi All,
I previously had a RNS-510 in my T5 multivan that had a buggy compass. It was changed under warranty for a new unit, but the new unit doesn't seem to be the same. The secret menu is missing and voice control no longer works. Here are the details of the old vs new units:
Old Unit:
Part number: 7F0 035 680 B
HW-Version: H61
SW-Version: 5269

New Unit:
Part number: 1T0 035 680 C
HW-Version: H50
SW-Version: 2840

So some quick questions:
1. What does the 7F0 vs 1T0 mean? I am yet to find a site that explains this part of the version number.
2. Can I compare the hardware and software versions directly or does the 7F0 vs 1T0 man they are totally different?
3. Have they given me a older / crappier unit as a replacement?

Thanks in advance.

[kamold]

1. 7F0 is a Transporter part number. 1T0 is a Golf/Passat part number.
The hardware is essentially the same, depending on the revision.

2. You can update your unit to the same generation of firmware. You will need to reload your maps from the maps CD:
Firmware updates for RNS510 units in Australia/NZ

3. Once you update the firmware and correctly code the unit for voice control it will essentially be the same as what you had. The replacement one is older. The list of variants is here:
Volkswagen RNS 510 Part Number List | my-gti.com

[wilko]

Thanks for the info, it's great.